57272291 has 2 divisors, whose sum is σ = 57272292. Its totient is φ = 57272290.

The previous prime is 57272279. The next prime is 57272297. The reversal of 57272291 is 19227275.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57272291 - 2⁶ = 57272227 is a prime.

It is not a weakly prime, because it can be changed into another prime (57272297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28636145 + 28636146.

It is an arithmetic number, because the mean of its divisors is an integer number (28636146).

Almost surely, 2^57272291 is an apocalyptic number.

57272291 is a deficient number, since it is larger than the sum of its proper divisors (1).

57272291 is an equidigital number, since it uses as much as digits as its factorization.

57272291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 35.

The square root of 57272291 is about 7567.8458625952. The cubic root of 57272291 is about 385.4619540622.

The spelling of 57272291 in words is "fifty-seven million, two hundred seventy-two thousand, two hundred ninety-one".